For anybody using simple green, do yourself a favor and throw it away and start using this. It's cheaper and does alot better, leaves NO residue. I've used it for 2 years and will never give simple green another peak into my garage. Don't use just any "orange" cleaner I've tried many knock off's, but this specific porduct is the bomb.
http://www.lowes.com/pd_143137-1383-...ed%2Blightning